FTSE 100 Live: Stocks to rise; US threatens Iran with ‘financial offensive’ as oil drops back

Welcome back to the City AM FTSE 100 liveblog. The blue-chip index is set to edge up on Tuesday morning, according to futures from investment platform IG. The FTSE 100 closed 0.4 per cent higher at 10,854.32 on Monday. The mid-cap FTSE 250 finished down slightly at 24,717.48 while the small-cap AIM All-Share wound up…